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Membrane separation type solvent dehydration system

Great attention is recently being paid to global environmental issues, and it is now conceivable that companies will need to treat used solvents themselves. In consideration of this kind of social issue, we have developed a “membrane separation type solvent dehydration system,” which uses a polyimide membrane with superior dehydration properties developed by Ube Industries, Ltd. in combination with our own distillation and concentration technology that has resulted in solvents being more easily recovered.

THREE:
  • 1Under the distillation system, even in case of azeotropic solvent compositions, this system which remove water vapor by the polyimide membrane will easily dehydrate.
  • 2In comparison with the distillation system, it significantly saves on use of steam.
  • 3Dehydration can be performed through merely supplying evaporated vapor to the membrane module and maintaining the differential pressure between the permeable side and the impermeable side.
  • 4Solvent purity of 99.9% or more can be achieved by carrying out dehydration with a polyimide membrane only.
  • 5The polyimide membrane has superior heat and solvent resistance. Therefore, the vapor permeation system reduces contamination of the membrane and thus extends its life.
THREE:As Trzia was walking in the town with her two uncles they were suddenly surrounded by a furious crowd, who, with shouts of La voil! La voil! celle qui a sauv les aristocrates, surrounded her, and in a moment she was separated from her uncles, her mantilla torn off, while angry voices, with fierce threats, demanded the list of fugitives.

The aromatic polyimide membrane is highly permeable to water vapor but less permeable to vapors of organic compounds such as alcohol etc.

THREE:The party in opposition to the Queen, absolutely unscrupulous and vindictive, hesitated at no calumny or exaggeration that might do her injury; and everything seemed to create fresh enemies for her.
  • 1 Recovery of the detergent solvent Recovery of the cleaning solvent such as electronic parts industry, precision instrument industry.
  • 2Solvent recovery and the refinement Solvent recovery and the refinement such as chemical industry, an industry of medical supplies, food industry, the fermentation industry.
THREE:It was the evening before the day fixed for their departure, the passport was ready, her travelling carriage loaded with luggage, and she was resting herself in her drawing-room, when a dreadful noise was heard in the house, as of a crowd bursting in; trampling of feet on the stairs, rough voices; and as she remained petrified with fear the door of the room was flung open and a throng of ruffianly-looking gardes nationaux with guns in their hands, many of them drunk, forced their way in, and several of them approaching her, declared in coarse, insolent terms, that she should not go.

Acetone, ethanol, methyl ethyl ketone, butanol, isopropyl alcohol, ethyl acetate, methyl isobutyl ketone, others (including hexane and toluene).